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Computer Science (9645)
9 sections available · 59 chapters available
Free Computer Science (9645) study notes for Oxford AQA International A-level students. Each chapter breaks down a key concept with examples and practice prompts you can turn into AI drills in the thinka app.
Unit 1 (AS): Procedural programming and data structures
Data types
Programming concepts
Arrays and lists
Records
Queues
Stacks
Unit 1 (AS): Program design, searching and sorting
Structured approach to programming
Abstraction and decomposition
Following and writing algorithms
Aspects of software development
Searching algorithms
Sorting algorithms
Unit 2 (AS): Representing data
Number bases
Units of information
The binary number system
Representing characters
Representing graphics
Representing sound
Basic encryption methods
Error detection and correction
Unit 2 (AS): Computer systems, organisation and architecture
Hardware and software
Software
Programming languages and translation software
Internal hardware components of a computer
The processor and its components
The Fetch-Execute cycle and interrupts
Factors affecting processor performance
Unit 2 (AS): Storage, logic and assembly language
Secondary storage
Logic gates
Boolean algebra
Instruction format
Assembly language programming
Unit 3 (A2 only): Object-oriented and additional programming
Classes, objects and instantiation
Encapsulation
Relationships between classes
Files and recursion
Unit 3 (A2 only): Advanced data structures and algorithms
Graphs
Trees
Hash tables
Priority queues
Dictionaries
Graph algorithms
Tree algorithms
Unit 4 (A2 only): Functional programming and theory of computation
The functional programming paradigm
Writing functional programs
Lists in functional programming
Finite state machines (FSMs)
Regular expressions and regular languages
Turing machines
Backus-Naur Form (BNF) and syntax diagrams
Classification of algorithms
Unit 4 (A2 only): Networking, databases and artificial intelligence
Communications
Networking
The Internet and the TCP/IP protocol stack
Cyber security
Relational databases
Big data
Applications, benefits and risks of artificial intelligence
Creating artificially intelligent systems
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